Examiner Sam Bhattacharya
Grant ratio: 88.3% (94th percentile in Art Unit 2646 among examiners with at least 20 applications). Average office actions per grant: 1.18. Most common rejection type: §103.
Recently active
Last office action in data: August 2026
Examiner record
- Examiner ID
- 73915
- Primary art unit
- 2646
- Work group
- 2640
- Technology center
- 2600
- Applications
- 1,054
- Granted applications
- 931
- Examiner phone
- (571) 272-7917
- Supervisor
- Matthew D. Anderson
- Supervisor phone
- (571) 272-4177
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| Group | Examiners | Average grant ratio | Average office actions / grant |
|---|---|---|---|
| Art Unit | 30 | 54.6% | 2.14 |
| Group | 226 | 57.7% | 2.06 |
| Tech Center | 1,754 | 57.4% | 1.88 |
| USPTO | 16,475 | 52.7% | 1.98 |
Office actions per application
| Office actions | Applications | Share of applications |
|---|---|---|
| No OA observed | 0 | 0.0% |
| 1 OA | 898 | 85.2% |
| 2 OAs | 124 | 11.8% |
| 3 OAs | 19 | 1.8% |
| 4 OAs | 6 | 0.6% |
| 5+ OAs | 7 | 0.7% |
Each application is counted once. “5+” includes all higher counts.
Grant history
Recent ratios may be lower while applications remain pending.
Yearly counts
| Year | Applications | Grants | Grant rate |
|---|---|---|---|
| 2008 | 17 | 17 | 100.0% |
| 2009 | 9 | 8 | 88.9% |
| 2011 | 74 | 68 | 91.9% |
| 2012 | 90 | 83 | 92.2% |
| 2013 | 76 | 75 | 98.7% |
| 2014 | 111 | 104 | 93.7% |
| 2015 | 71 | 67 | 94.4% |
| 2016 | 88 | 82 | 93.2% |
| 2017 | 77 | 70 | 90.9% |
| 2018 | 74 | 69 | 93.2% |
| 2019 | 68 | 64 | 94.1% |
| 2020 | 61 | 57 | 93.4% |
| 2021 | 29 | 27 | 93.1% |
| 2022 | 54 | 53 | 98.1% |
| 2023 | 35 | 31 | 88.6% |
| 2024 | 41 | 39 | 95.1% |
| 2025 | 48 | 17 | 35.4% |
| 2026 | 31 | 0 | 0.0% |
Rejections by office-action stage
| Office-action stage | Actions observed | §101 | §102 | §103 | §112 |
|---|---|---|---|---|---|
| Action 1 | 1,054 | 2.8% | 43.5% | 37.1% | 5.2% |
| Action 2 | 156 | 1.9% | 25.0% | 54.5% | 7.7% |
| Action 3 | 32 | 0.0% | 34.4% | 62.5% | 3.1% |
| Action 4 | 13 | 0.0% | 15.4% | 76.9% | 7.7% |
| Action 5 | 7 | 14.3% | 0.0% | 57.1% | 28.6% |
| Action 6 | 5 | 0.0% | 0.0% | 80.0% | 20.0% |
Section 101 rejections
Last 3 years: 2023-08-28–2026-08-28. All years includes every dated office action in the data.
By year
0.0%
0.0%
0.0%
3.0%
2.0%
2.1%
2014: Alice
0.0%
3.1%
3.7%
5.0%
2.0%
2019: PEG
2.8%
3.2%
0.0%
1.8%
5.6%
2024: AI examples
12.2%
2025: August memo
0.0%
0.0%
Each bar is the percentage of office actions with a §101 rejection.
PTAB appeals
No PTAB decisions could be matched to this examiner.
Older and transferred applications may not have a reliable examiner match. Data through Aug. 27, 2026.